Sandpapering-plane.



A. MAY. HSANDPAPERING PLANE. APRLIOATION iI' ILED FER-26,1909.

. Patented Aug. 31, 1909.

.UNTTED STATES PATENT FFlCE.

AUGUSTUS MAY, OF NEW ORLEANS, LOUISIANA.

SANDPAPERING-PLANE Specification of Letters Patent.

Patented Aug. 31, 1909.

Application filed February 26, 1909. Serial No. 480,228.

To all whom it may concern:

Beit known that I, AUGUSTUS MAY, a

citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful.

Improvements in SandpaperingPlanes, of

which the following is a specification,

Thisinvent-ion relates to new and useful improvements in sand papering planes and it pertains generally to a structure of that without the necessity of dismantling the structure and in which when the outermost sheet has become worn it may be torn away, exposing the next adjacent sheet, and in this manner dispensing with the necessity of operating any of the parts to expose a new planing surface.

The above are the primary objects of the invention but in addition to these, the structure has been devised with a number of collateral objects in view, chief of which is the provision of a sand paper-ing plane by means of which great pressure can be put upon the material worked upon and a long sweeping stroke can at the same time be employed. In this manner the work can be accomplished eflicaciously and the surface rubbed will have its finish uniform throughout.

The invention retains also the incidents of simplicity, inexpensiveness and strength and the structure is compact and neat in appear- In the accompanying drawings a preferred and advantageous embodiment of the invention is illustrated, the structural details of which are set forth at length in the following description while the novel features by "hich the invention is distinguished from the prior art are recitedin language of the proper determinative scope in the'claims appended at the end of the'specification.

In the said drawings: Figure 1 is a perspective view of a sand papering plane constructed in accordance with the present invention. Fig. 2' is a horizontal sectional view thereof. Fig. 3 is a transverse sectional view thereof and Figs. 4, 5 and 6 are plan views showing different forms of conformably in clamps for holding the sheets of paper upon the body of the plane.

Similar characters of reference refer to corresponding parts throughout the several views.

The body of the device is indicated by the numeral 1 and for convenience shall be hereinafter referred to as'a block. The block 1 .is preferably constructed of iron or otherwise weightedin order that material, pressure may be placed upon the surface to be finished. For convenience, said block is provided on its upper side with two handles, as 2 and 3, the former being somewhat higher than the latter. The direction of the stroke of the plane may be readily controlled by turning the block with one handle and the pressure may be maintained by bearing down upon the other handle. The block 1 has its side faces formed with longitudinal grooves, as 4, which extend the entire length of said block and which define with the lower portion of the block a substantially inverted T- shaped head, as5. The grooves 4 are preferably of rectangular form with sharp corners and straight sides in order that the sheets of paper, as 6, may be more readily clamped therein and placement. The sheets 6 are clamped upon the T-shaped. head 5, the side portions of said sheets being bent around the projecting flanges 7 of said head, and being then fitted the grooves 1 wherein they are held by a suitable clamping device, as illustrated in Fig. 4, and which comprises fiat sided bars, preferably of rectangular cross section, as 8, each of which fits in one of the grooves 4;. The bars 8 have inwardly extended end lugs, as 9 and 10, the lugs 9 being connected by a retractile spiral spring, as 11, and the lugs 10 having threaded recesses or openings to receive the oppositely threaded end portions of an adjusting screw, as 12, the latter having an enlarged milled intermediate finger portion, as 13. The bars 8 are fitted in the grooves 4: in the manner shown in Figs. 2 "and 3, the lugs 9 and 10 overlying the ends of the block 1 and holding said bars against axial movement. The

spring 11 holds the bars against-lateral movement at one end of the block and the bolt12 holds them against lateral movement at the other end of the block.

In Fig. 2 instead of one bolt 12 andthe spring 11, T have shown two bolts 12. In the more firmly held against disconstruct-ions wherein the bolts are em 'ployed', the block 1 has its end faces. formed with recesses: as 14, accommodate: the inwardly projeeting portion of the finger piece 13. V

In Fig. 5 I have an arrangement in i which, instead of a. bolt; 12 at one end of the,

clamp structure, as: in Fi 4, a spring 11 has been employed, two n Fig. 5. a p

In Fig. 6 a bolt; as 12, is employed at one end of the clamp structure and at the other end thereof a connecting bar or link, as 15, is provided, such bar or link being pivoted to the ends of the bars 8. r In using theelamp structure shown in Fig.

2, theisheets of paper are fitted in position in .the manner stated and .as shown more particularly in Fig. 3 and the bars 8 are then fitted in the grooves hand over the portions of the. sheets 6 therein. The bolts 12 are then turned to draw the bars 8 toward one another and the sheets 6 are thus eflieiently clamped in position.- When it is desired to renew the supply'of sheets the bolts 12 are manipulated remove the bars 8 away fromone another as far as may be necessary for the insertion of new sheets. When one sheet 6 has been worn out it is severed from its side portion at. one side of the blockby means-of a penkuife or other suitableinstrument and 1t is then torn from its other side portion at the 1 other side of the block, the sharp edges of the such springs, of course, being used in the embodiment of I bars-8 serving as eflieient paper tearing edges in this connection. -Obv'iously, in the use of v the clamp structure shown in Fig. 4,'tl1e bolt 1 12 is manipulated to free the lugs 10 and the ubars 8 are then sprang; fromthe grooves 4.

J They are also sprung from said grooves in '40 the form shown-in'Fig. 5; and in theform' Ina sand papering plane, combination, a block having longitudinal grooves in its side walls extending the entire length thereof, clamping bars fitted in said grooves and unattached to said block and-meansconnecting the projecting end portions of said bars to permit of lateral movement thereof toward and away from one another.

In testimonywhereof I have hereunto set my hand in presence of two subscribing wit nesses.-

AUGUSTUS MAY Witnessesz i ANDREW Hnn),

J No. J. WARD. 

